de

说明：  用于菊萍时间序列的复制小波morlet小波再matlab上的程序，稍加修改分析文件名和年份即可(菊萍 wavelet time series for the program and then on the copy matlab wavelet morlet, slightly modified to analyze the file name and year)

this is a matlab model of single machine infinite bus with out any controller. we can add any type of controller for verification of stability of the system

一个完整的1.5MW双馈风力发电机组的matlab仿真模型可以进行低电压穿越仿真。(A complete 1.5MW double-fed wind turbine matlab simulation model can be low voltage through simulation.)

说明：  如何在一个方形区域画一个半径为小数的圆，也要求画出方形区域，并指出圆的位置(how to plot a circle and a square,please point the location of the circle)

并用S函数编制相间距离保护和接地距离保护算法程序,构建相应的保护模块,实现了三段式距离保护。仿真结果表明,所建立的三段式距离保护模型能够正确反映在保护区内的不同类型的短路故障并发出动作信号,使断路器跳闸实现输电线路的保护功能。 (A distance protection simulation model of transmission line was established by using Simulink and SimPowerSystem toolbox inMatlab. S-function was used to programe the distance protection of phase faults and earth faults and the relevantprotectionmodelswere created to build distance protection.The simulation results show that the three-stage distance protectionmodel can respond to allkinds of faultswithin protection zones correctly and send correct signal to the breaker of the line. )

bearing faults detection

解线性方程组之直接法【matlab例程】经典算法直接应用方便快捷(Convenient and direct method for solving linear equations of the [routine] classical algorithm matlab direct application)

discover far-close relations (distances) between especially many clusters in high-dimensional space

说明：  基于四阶累积量的MUSIC算法，内有注释(Fourth-order cumulant-based MUSIC algorithm, the annotated)

实现复合辛普森公式、隆贝格算法、复合高斯公式求解数值积分，并有案例(Achieve a composite Simpson formula, Long Beige algorithm, Gauss formula for solving complex numerical integration, and there have been cases)